Dimo: Particles is an artistic particle physics simulation and interactive art exhibit I created (along with fellow Red Hat engineers Ian Hands and Ben Pritchett) for the SPARKcon festival in 2014.
Launch live demo!
Pictures These pictures are from the art exhibit at geekSPARK in 2014.
$GALLERY
After the event, I wrote this opensource.com article about the experience.
The source code is, of course, open.

I spent a bit of time this weekend building an RGB color cube for ColorPal, using Three.js. Drag and drop any image, and you’ll see a cube with all the pixels of your image mapped into 3D space.
Launch live demo! and view the code.
Your web browser must support WebGL, which at this point in history means a fairly recent Firefox or Chrome. In case your web browser doesn’t support WebGL, here’s a video to enjoy while you download Firefox Nightly.

ColorPal is an HTML5 color palette generator. Here’s a gif demonstrating how to use ColorPal. The color quality in gifs is pretty terrible, but you can still see the basic usage.
Try it out at colorpal.org.
ColorPal also has a command-line interface, powered by Node.js.
I’ve written some posts about ColorPal.